I have a SX SJB-75, and I'm looking to upgrade pickups (Duncan Design Jazz bass from a VM Squire). I dig that Marcus tone, and I dig the tone of the Carvin SB Basses. BUT, which of these 2, the J99's or Seymour Duncan Basslines Jazz Bass Classic Stack Pickups are the best way to go?

Carvin's will sound more like traditional Jazz pickups (like Marcus) but since they are single coil you'll have to deal with the hum.
I have never used the J99's personally, but they are said to be way better than Carvin's other pickups...which I've never liked.

Stacks are humbuckers so they will be noise free. But since they are humbuckers they won't sound like Jazz pickups.

Area J's are noiseless, and sound like vintage Jazz pickups. Best of both worlds. Love them.